Emergency
96 on Alpha E-Tec Plus

Your boiler has detected an obstruction in the pipe that removes exhaust gases, meaning it cannot safely vent and has shut down to prevent a carbon monoxide hazard.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

Blocked flue or restriction - This occurs in the event an obstruction is detected in the flue system

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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